PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-16:57:40
G01     318.4          19.2                6.4 +/-    1.70      14.4 +/-    1.70  0.290 / 0.290
G08     257.4          12.3                7.5 +/-    4.69      19.8 +/-    4.69  0.350 / 0.410
G10     81.9           52.8                7.6 +/-    1.25       9.3 +/-    1.25  0.170 / 0.170
G11     303.2          22.6                6.1 +/-    1.00      12.7 +/-    1.00  0.150 / 0.260
G14     300.1          70.4                6.1 +/-    0.58       6.4 +/-    0.58  0.040 / 0.060
G22     301.5          12.1                5.2 +/-    6.09      13.8 +/-    6.09  0.030 / 0.040
G31     175.9          43.8               10.5 +/-    0.90      14.5 +/-    0.90  0.030 / 0.030
G32     10.9           66.1                6.7 +/-    0.57       7.3 +/-    0.57  0.040 / 0.030